| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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4,512 pcs
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4512 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The DS1218S is a CMOS circuit from Analog Devices / Maxim Integrated that converts standard CMOS RAM into nonvolatile memory. It features automatic switching to a battery backup when the main power supply (VCC) fails or goes out of tolerance. This ensures data integrity by providing uninterrupted power to the RAM.
The controller monitors the VCC supply and, when it drops to 1.26 times the battery voltage, it inhibits the chip enable output to protect against writes. This write protection mechanism is crucial for maintaining data accuracy during power interruptions. The device consumes less than 100nA of battery current, making it highly efficient for long-term data retention.
Available in a space-saving 8-pin SOIC package, the DS1218S is suitable for surface-mount applications. It operates with a supply voltage of 4.5V to 5.5V and an operating temperature range of 0°C to 70°C. The chip enable output has a maximum propagation delay of 10ns during nominal supply conditions.
By combining the DS1218S controller with CMOS memory and lithium batteries, designers can achieve up to 10 years of nonvolatile RAM operation. This makes it ideal for applications requiring persistent data storage in embedded systems.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.50 | $1.50 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating voltage range for the DS1218S is 4.5V to 5.5V.
The operating temperature range for the DS1218S is 0°C to 70°C.
The DS1218S is a Nonvolatile RAM Controller.
The DS1218S is available in an 8-SOIC package.